#4 V I characteristics of pn junction diode || EC Academy

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E

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[@joychakkalakkal7265]

Dear sir,
Reverse breakdown voltage of silicon is -75V and of germanium is -50V. Here (-75)is smaller than (-50) then how can it be greater?

[@ECAcademy]

Negative sign indicates reverse voltage not negative voltage. That's why we say silicon can sustain upto 75 v in reverse bias compared to germanium which can sustain 50 v in reverse bias condition. Hence si is preferred over ge.
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Sir your explanation is very good sir.. zener diode explain cheyandi sir plz

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Easily understood sir

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Qualitative description of current flow at junction of forward and reverse bias plz explain sir

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[@hemanthchakradhar7656]

This is about diode or pn junction diode?

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Diode, semiconductor diode and PN junction diode all are same
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Nice explain

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[@anjalisha2478]

Reverse breakdown voltage of Si is less because -75 is less than -50 than how u told that silicon is preferred over Ge ?

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Sir rply tho de.digiye

[@ECAcademy]

Negative sign indicates reverse voltage not negative voltage. That's why we say silicon can sustain upto 75 v in reverse bias compared to germanium which can sustain 50 v in reverse bias condition. Hence si is preferred over ge.
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[@muneekhan4497]

Sir Why abrupt changr occurre in current?(in both cases)

[@ECAcademy]

It is not abrupt change.... in forward bias diode start conducting from 0.7 or 0.3v hence current increases with respect to voltage. In reverse bias the current increases due to junction breakdown.
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[@muneekhan4497]

Sir in a very short very large amount of current is produed why?

[@maheshedla1774]

Can u discuss about the losses in raising time. Ex: voltage loss occurs in between knee point to settling time ? Thanks

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Thank you Sir 🙏🏻

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[@malapatipoojitha6882]

Voltage drop across Diode can only be knee voltage.If we apply more than knee voltage where does other voltage drop occurs other than diode voltage drop

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Voltage drop will be at all other components connected in a circuit..!!! Hope this cleared your doubts...!!!
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[@queencyfernandes6369]

how can one identify the material of the diode by observing the v-i characteristics of a diode?

[@lpjunction]

Plot the VI curve, the knee voltage will tell the difference.

[@chintupavan8775]

In reverse bias condition
Why the current is independent
Up to some particular time

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In RB the current ( small & negligible ) will not increase even though the voltage is increased it remains constant…. That’s why the current is independent of applied voltage in RB condition.
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Thank you Sir

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Good

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Supppbbb,🙏🙏🙏🙏🙏🙏🙏🙏🙏🙏🙏🙏🙏🙏🙏🙏🙏🙏🙏🙏

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Thank you

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[@meghasuhanth6357]

why is the current 0 for the forward voltage less than knee voltage?

[@ECAcademy]

The current will not be zero... small amount of current is present due to non conduction of diode.
Silicon Diode will conduct only form 0.7v and germanium diode conducts from 0.3v in forward bias.
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[@meghasuhanth6357]

@@ECAcademy oh yeah thanks a lot

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@@ECAcademy sure

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Sir, why do we consider voltage in x-axis & current in y - axis

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Because In x axis we will consider independent variable and in y axis we will consider the dependent variable.
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🤝👍

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Thanks sir

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Sir coukd u please provide notes for it.❤

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Thanks

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👌

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760 th 👍

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[@chetanpatidar1406]

Where is germanium diode.i want to study vi characterstucs of germanium diode

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Sir vtu eee branch vedios madi

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:)

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Gm sir

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It’s not linearly it’s exponential!

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Voltage and current will linearly dependent in forward bias. Exponential will be in the form of a curve. Hope you understood.
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A

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Your sound is very very very very very very very slow

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